Building panel



FIG. 1 is a perspective view of a building panel illustrating our new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a perspective view of two building panels attached together.

The broken lines are for illustrative purposes only and form no part of the claimed design. The claimed design is broken on one side to indicate indefinite length. 

The ornamental design for a building panel, as shown and described. 